spoguļota no
https://github.com/noerw/geo-dht
sinhronizēta 2025-09-18 18:02:33 +02:00
37 rindas
1,3 KiB
Markdown
37 rindas
1,3 KiB
Markdown
# geo-dht
|
|
> status: experimental
|
|
|
|
Results of our applied research on geo-routing / -hashing in peer to peer systems.
|
|
This repo provides two DHT implementations with a 2D topology:
|
|
|
|
- 2D-CAN: DHT with a 2D grid-based topology.
|
|
Fully functional, though no geohashing is implemented (unclear how this would be meaningful apart from a translation of geographic coordinates to keyspace coords..).
|
|
Currently, nodes only know about their direct neighbours.
|
|
|
|
- 2D-Kademlia: DHT with XOR-metric based routing.
|
|
Compared to Kademlia, the address space is twice as deep to accomodate for spatial addressing:
|
|
Content- & node-addressing works through a [geohash] forming a Z-order curve, allowing to infer spatial relationships between nodes.
|
|
|
|
Originally, the plan was to compare the routing of both implementation through simulation in [The ONE]; but we're lacking time for this.
|
|
|
|
[The ONE]: https://github.com/akeranen/the-one
|
|
|
|
## usage
|
|
To start the first Node in a DHT:
|
|
```sh
|
|
python app.py
|
|
```
|
|
|
|
To start a new node and join it to an existing DHT:
|
|
```sh
|
|
python app.py {entry_port}
|
|
```
|
|
...where `{entry_port}` is a port on localhost with another running Node.
|
|
|
|
> Currently nodes only communicate whithin `localhost`. It should be easy to generalize to full IPs with some small modifications.
|
|
|
|
### Valid commands
|
|
* `GET {key}`
|
|
* `PUT {key} {value}`
|
|
* `STATE`
|
|
* `STATE VIZ`
|